Energy Notes for Pre-AP Physics I Essay

Conductor:
In a conductor (usually metal) many of the electrons are free to move around within the conductor.
"sea of electrons": movement of the electrons looks like a flowing sea. a charged object will always be attracted by a conductor.
Positively charged object near conductor = attraction
Negatively charged object near conductor = electrons repel Protons are fixed in place because they make up the mass of the conductor When no charged object is near the conductor, the electrons evenly distribute themselves within the conductor.
Insulator:
In an insulator (such as plastic, rubber, glass, etc) the electrons are not free to move around the entire object.
Generally restricted to moving only around the atom they are attached to
Can move from one side of the atom to the other but are unable to leave the atom Charges stay where you put them on an insulator. A neutral insulator will always be attracted to a charged object.
Losing charge (charge theft):
Neutrally charged objects (conductors or insulators) will always be attracted to a charged object.
As the objects reach the charges object they end up picking up excess charge and now have same charge as object so they are repelled by it and once they leave, they take charges with them.
Particles in the air removes excess charge and leaves it neutrally charged
Moist days; more water particles; steal charge more rapidly. Dry days; fewer particles; get discharged once we touch(shock)
Triboelectricity:
Whenever two different materials rub against each other it is less likely that one will leave with more electrons than it started with the other will leave with less.
Electrons are stolen from you by carpet: + charge; negative charges are free to move
Electrons are stolen from carpet by you: - charge; electrons will jump from you to another place
Triboelectric series (ex: rubber rubbed w/ wool, rubber = -, wool = +)
The item that is higher on the list will end up more positive and the lower one will end up more negatively charged.
Coulomb’s Law:
Any two charged objects will create a force on each other. Opposite charges will produce an attractive force while similar charges will produce a repulsive force.
The greater the charges, the greater the force. The greater the distance between them, the smaller the force.
The forces are force pairs of each other so they will always be equal in size and opposite in direction.
Quantity of charge can be measured in either elementary charges (an elementary charge is the amount of charge on one electron or proton) or in Coulombs
Forces on multiple charges:
The forces are large when two charges are near each other but get smaller as they move…

Energy Systems
Even the involuntary muscles require energy
Energy is like fuel to a car
You put the fuel in and then burn it off
Energy = ATP
ATP is stored in our muscles
Foods
Carbohydrates – bread, pasta
Fat – avocado, chips, chocolate
Protein – meat, nuts, eggs, dairy
ATP Breakdown
Any muscular contraction (movement) requires the breakdown of ATP
Inside our muscles we have a huge amount of ATP; depending on the size of the muscle contraction alters the amount of ATP molecule…

Mr. Shelp
AP Physics
17 November 2013
AP physics laboratory
1. Title
The investigation on the range, time, initial height, initial velocity, angle of throw, horizontal velocity and vertical velocity of projectile motion
2. Abstract
In this laboratory, we measure the range, time, initial height, and initial velocity, angle of throw, horizontal velocity and vertical velocity firstly. After analyzing the measurements and calculations, we find out the conclusions about…

In nuclear fission an atom must first absorb an extra neutron, this causes it to spin and distort. A few billionth of a second later, the atom splits into two smaller RADIOACTIVE nuclei.
It is this processthat releases huge amount of the energy used to power nuclear reactors.
As the atoms split they also release 2 or 3 neutrons, other atoms IN THE MATERIAL THAT MAKE UP THE NUCLEAR REACTOR absorb this neutrons, thus CAUSING A CHANGE TO THEIR NUCLEUS
making them unstable AND RELEASE MORE…

social, and thought processes.
Major Depressive Disorder
 people show persistent feelings of sadness and despair and a loss of interest in previous sources of pleasure.
 Reduced appetite and insomnia are common. People with depression often lack energy. They tend to move sluggishly and talk slowly. Anxiety, irritability, and brooding are commonly observed. Self-esteem tends to sink as the depressed person begins to feel worthless. Depression plunges people into feelings of hopelessness, dejection…

ourselves
Blaming the disease
They did not have medicine like we have
They did not have microscopes
People blamed it on god
Or on other people such as the jews
Pogroms start including mass murder of European jews
08.26.14
AP EUROPEAN HISTORY BOOT CAMP
DAY 2. Chapter 11 –continued
I. Review: A time of troubles
A)THE BLACK DEATH:
1)Very high Mortality (1/3 of population!)
2)Fast spreading epidemic( RATS, Fleas):
3)Made easy by the Mongol Conquest
B) Its CONSEQUENCES: ECONOMIC
1)Labor Shortages leads…

be present in the measurement of data
The orders of magnitude of measurements of data can be explained with the concept of significant figures. I’ll assume you all know what decimal places are, you may already know what significant figures are but I will explain them anyway. The number of significant figures you have in a particular quantity is just how many digits you use to make up the quantity, omitting leading zeros. For example the number 52 has two significant figures, that being the ‘5’ and…

Pre- Hamlet Notes
Tragedy: a dramatic composition, often in verse, dealing with a serious or somber theme, typically a great person destined through a flaw of a character or conflict with some overpowering force, such as fate or society, to downfall or destruction.
Aristotle’s View on Tragedy:
Definition: the imitation of an action that is serious and also, as having magnitude, complete in itself; in language embellished with each kind of artistic ornament, the several kinds being found in…